A car whose owner can only afford to run it by making regular donations to the sperm bank
Damn I just got caught by a speed camera and my fuel tank is empty and my insurance needs renewing. I calculate that to cover this cost I need to make 72 donations to the sperm bank. Or ask my boss for a payrise but that would involve less orgasms for me.
A nice, if often oddly colored car, purchased and driven poorly by a dork that, quite correctly, thinks it is the only way in hell he might ever score a babe that might possibly be made hot in a glamor shot, if then.
The idea of a cheapfamily vehicle that uses powered flight instead of rolling along on the ground. Popularized by cartoons and science fiction, it was widely expected in the late 20th century to become a reality "real soon now."
In common usage, it represents a shattered hope for the future.
Carbon nanotubes? That's great, but where's my fucking flying car already?